Shock-absorber for vehicles.



No. 818,646. PATENTED APR. 24, 1906.

B.. P, wINsoR.

SHOCK ABSORBER POR VEHICLES. APPLIoATrox FILE sama. 190s.

'Tol aZZ whom it may concern: n

ROBERT P. 1V INSOR,V OF PROVIDENCE, RHODE ISLAND.

SHOCK-ABSORBER FOR VEHICLES.

No. eie,e4e.

Specification of Letters atent.

Patented April 24, 1906.

pplication filed September 5, 1905. Serial No. 277.085.

Beit known that I, ROBERT P. WINsoR, a citizen of the United States of America, and aresident of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Shock Absorbers for Sprin chicles, of which the following is a specication.

This invention relates to shock-absorbers for automobiles and other road-vehicles in which the body of the vehicle is supported by springs.

The present invention consists in certain novel combinations of parts hereinafter described and claimed; and its leading object is to prevent or reduce violent motion of the spring-supported body in both directions on rough roads, so as to prevent the breaking of the s rings, the straining of the vehicle, and the s aking up of the passengers by sudden shocks and at the same time to avoid continuously intensifying or stiffening the springs, so as to render the vehicle easy riding on smooth roads.

Other objects of the to adapt each of the s teck-absorbers to be readily adjusted, so as to offer the necessary degree of frictional resistance to the thrashing of the s rings on rough roads, to adapt the same to e adjusted so as to increase or reduce the scope of free movement for smooth roads, and to cushion the contact of the opposing surfaces of the lost-inotion device.

A sheet of drawings accompanies this specification as part thereof.

Figure 1 is a sideview of one of the improved shock-absorbers attached to a springvehicle, and Fig. 2 is an elevation of a substitute slotted connection detached.

Like reference characters refer to like parts in both figures.

It will be understood that each vehicle is provided with one or more of the shock-absorbers, usually one at each body-supporting spring.

In Fig. 1 the axle A is crossed by a semi-elliptic body-supporting spring B, which is attached to the axle b a pair of clips 1 and 2 and is connected wit the body-frame C by a link 3 at the front end of the spring and aA hinge-joint 4 at the extremity ot a rigid extension 5 of the frame C. The cap of the clips 1 and 2 is adapted for the attachment thereto directly above the axle by a pivotal bolt 7 ol' the lower end of a slotted connection D or D2 in the form of a short pit man, the uppresent invention areV per end of which is provided with a vertical slot 8, with cushions 9 and 10 at its respective ends, and with or without an adjustingscrew 11 and follower 12 for increasing or reducing the' scope of free movement for smooth roads. (Compare Figs. 1 and 2.) Said slot 8 and cushions 9 an l0 interact with a stud 13, which rejects rigidly from the side of a lever-piece E near its inner end and normally occu ies a position midway between the cushions 9 and 10, as in Fig. 1, with sufficient space between to preventcontact at the extremes of such upward and downward movements of the spring-supported body vas occur when riding on fairly smooth roads. When such smooth-road movement is exceeded, said slotted connection D or D2 andk lever-piece E interact to move the latter on its axis of movement, and such excessive movement is resisted and reduced by a strap 14, forming part of said lever-piece E and provided with a frictional lining 15, of leather or the like, which embraces thel periphery of a relatively stationary circular drum F.

The frictional contact of the strap 14 with the drum F is regulated by a screw-bolt 16, uniting the ends of the strap and easily accessible. at the end of the vehicle, while the slotted connection D or D2 renders the leverpiece E movable by hand when the vehicle is at rest. By so moving said lever-piece the resistance of the frictional device can be determined with nicety, and by means of said bolt 16 the same may be regulated as reuired. v

The drum F may be rigidly attached to the frame C by bolts 17 or in any approved manner.

The cushions 9 and 10 may be rubber springs, as re resented, or springs or cushions of other 'nown or im roved forms, or they may in some cases e omitted, and other like modifications will suggest themselves to those'skilled in the art.

Having thus described said improvement, I claim as my invention and desire to patent under this specification- 1. The combination, with an axlefbodyframe, and body-sup orting springs, in a road-vehicle, of a shoc '-absorber interposed between the axle and body-frame and comprising a frictional device by which the springs are stifl'ened and their movements retarded on rough roads, said frictional device comprising a member iixedly attached t0 ,said body-frame and a relatively movable member and a slotted connection between said relatively movable member and the axle, yforvrenderng said rictional device 1dle on 5 smooth roads.

. 2. The combination, with an axle, body- `frame, and body supporting springs,`in a road-vehicle, of a shock-absorber interposed between the axle and body-frame and eon1- ro prising a circular drum ixedly attached to said body-frame, a lever-piece including a strapv havin a linin of leather or the like embracing t e perip ery of said drum and provided with a stud, a slotted connection, the slot of whichV embraces said stud, andA said body-frame, a-lever-piece includingv a to va'rly the eective length of the slot. 4. h

strap havin a linin of leather or'the like lembracing t e perip ery of said drum and provided with a stud, a slotted connection, the slot of which embraces said stud, and means for adjusting said slotted connection e combination, with an axle, bodyframe, and bodyjsup road-vehicle, of a shoe -absorber interposed between theaxle and body-frame and corn` -prising a circular drum ixedly attached to a lever-piece including a said body-frame,

of leather or the like strap havin a linin embracing t e perip ery of said drum and 'provided' with a stud, a slotted connection,

the slot of which embracessaid stud, and means Within said slot for cushioning the contact of its ends with said stud, substantially as hereinbefore specified.

Datedthe 2d day of September, 1905.

ROBERT P. WINSOR..

Witnesses:

FRANCIS J. HUGHES, STEPHEN A. COOKE.

orting springs, in a 

